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| Year | Trade Value | Weight (kg) | Quantity |
| 2005 | $47,722,764,303 | 126,817,381,542 | 126,817,381,542 |
| 2006 | $66,411,903,451 | 145,174,839,082 | 145,174,839,082 |
| 2007 | $79,858,328,656 | 163,161,815,028 | 163,161,815,028 |
| 2008 | $129,330,933,227 | 178,885,216,450 | 178,885,216,450 |
| 2009 | $89,255,586,690 | 203,786,208,448 | 203,786,208,448 |
| 2010 | $135,299,673,339 | 239,308,696,439 | 239,308,696,439 |
| 2011 | $196,770,604,891 | 253,769,323,901 | 253,769,323,901 |
Note: Quantity represents Weight in kilograms
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